MULTIKILOHERTZ STIMULATED BRILLOUIN-SCATTERING

We report, for the first time to our knowledge, multikilohertz stimula ted-Brillouin-scattering phase conjugation of copper-vapor laser radia tion. The small wavelength shift associated with the Stokes radiation is shown to permit double-pass aberration correction of the copper-vap or laser, avoiding the postlasing absorption. Preliminary results on t he effects of stimulated-Brillouin-scattering medium type, purity, geo metry, and flow on the efficiency are presented, as is an initial asse ssment of the conjugation fidelity.